Solution

011
+235
078
0313

Step 1

1
+235
078
3
5 + 8 = 13
Carry= 1
Unit Value = 3

Step 2

11
+235
078
13
3 + 7 + 1 = 11
Carry= 1
Unit Value = 1

Step 3

11
+235
078
313
2 + 0 + 1 = 3
Carry= 0
Unit Value = 3

Step 4

011
+235
078
0313